XS Roadmap
Versioning Scheme
Releases will follow a <major>.<feature>.<minor> versioning scheme, as follows:
- 2.0 is our long-term "Next Gen" release somewhere in the distance
- 1.0 is our mid-term "we are proud of it - features and stability" release
- 0.3 will be the first release managed by Martin Langhoff, to sync with Peru's April 2008 deployment
- 0.2 is Build 160 by Wad.
If for example 0.2 needs bugfixes, we'll see a 0.2.1 release. The 0.9 to 1.0 transition will be about stability and polish.
Exactly what happens between 0.2 and 1.0 will be defined via release goals and blueprints (similar to Ubuntu's approach) which will be managed in dev.laptop.org .
Note: On dev.laptop.org our release names are prefixed with "xs-" so 1.0 is xs-1.0.
Release schedule
The XS should see a new feature release every 3~4 weeks until we hit v1.0. At that point we will encourage installations to switch to v1.0 and ensure the upgrades from earlier releases to 1.0 work smoothly. From 1.0 onwards the release cycle will be slower - probably about 4 months.
In calendar terms, we are very loosely talking about
- 0.2 18th April 2008
- 0.3 9th May 2008
- 1.0 mid-November 2008
- 1.1 March 2009
Upgradeability considerations
A key consideration is that once XS is widely installed, countries/regions will want to limit the number of upgrades they apply to the XS. During the 1.x cycle, we must support environments where the XS has a yearly upgrade. That means that with a 4-month cycle 1.0 must be able to upgrade to 1.4 smoothly.
Deployment managers need to be aware that XS with versions earlier than 1.0 can be managed in two ways:
- Once 1.0 is ready, there will be a special upgrade procedure to get from 0.x to 1.0 with minimal steps.
- Upgrading through each version.
Installations using 1.x will be expected to upgrade at least yearly.
Key metrics
When judging release goals, there are some key metrics we must consider (and are not always obvious):
- A common scenario will be an unattended, unmanaged XS that only gets powered up and forgotten. Might have Internet/WAN access, but probably not. Are we improving/regressing the XS performance for that scenario?
- How about the minimal configuration scenarios?
Release goals
1.0
- features from 0.9
- bufixes
- upgrade path from any earlier 0.x release
0.?
Wishlist for the 0.x series.
- XS_Manageability - solid, secure and flexible remote management for XS, inspired in ISConf and PlanetLab
- XS_HTTP_Proxy a strong double-proxy setup inspired on CoDeeN
- XS_BackupRestoreService Integration with XO's Journal to provide a backend that facilitates content "restore" services in a "time machine" style
- XS_BackupRestoreDRStrategy solid, flexible scheme to backup and restore the XS itself
- XS_AdminUI simple admin UI to support some key usage scenarios
- Webapps
- XS_Moodle - with customised UI, options to load prepackaged course content, SSO
- XS_Mediawiki - with customised UI, options to load/update prepackaged Wikipedia content, local content, SSO
- XS_Library - Content repository infrastructure
0.3
Matches XO's "Update.1" release. Will be deployed in Peru - our first large-scale install of XSs, many of them with nil or spotty connectivity, so strong focus on install tools and manageability.
- Backups
- Install config
- Security scheme
- Manageability
Note: Old releases go to the XS_Changelog